Analysis
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max time kernel
152s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220718-en -
resource tags
arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system -
submitted
25-07-2022 00:14
Behavioral task
behavioral1
Sample
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe
Resource
win7-20220718-en
General
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Target
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe
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Size
283KB
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MD5
9c40dc626ff68bd1b114b266ad83aaaa
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SHA1
4852aa302d72519f443bff5fa14ae44bec7183a2
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SHA256
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318
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SHA512
c09773f312edf242b4071a9eb42e634db36587ebf53e5430ab95ff1421a327fe7b7f909be03279d65db58a335c3958960a96e29c342f926b90e0d70cf54f93cd
Malware Config
Extracted
darkcomet
Guest16
127.0.0.1:888
DC_MUTEX-7X1Q8Z3
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InstallPath
MSDCSC\msdcsc.exe
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gencode
6Rm4GrjxWWjW
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install
true
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offline_keylogger
true
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persistence
false
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reg_key
MicroUpdate
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe -
Modifies firewall policy service 2 TTPs 3 IoCs
Processes:
msdcsc.exedescription ioc process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile msdcsc.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" msdcsc.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" msdcsc.exe -
Modifies security service 2 TTPs 1 IoCs
Processes:
msdcsc.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" msdcsc.exe -
Processes:
msdcsc.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" msdcsc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" msdcsc.exe -
Disables RegEdit via registry modification 1 IoCs
Processes:
msdcsc.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" msdcsc.exe -
Disables Task Manager via registry modification
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Executes dropped EXE 1 IoCs
Processes:
msdcsc.exepid process 908 msdcsc.exe -
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
Processes:
attrib.exeattrib.exepid process 1544 attrib.exe 1500 attrib.exe -
Processes:
resource yara_rule behavioral1/memory/1496-55-0x0000000000400000-0x00000000004C7000-memory.dmp upx \Users\Admin\Documents\MSDCSC\msdcsc.exe upx \Users\Admin\Documents\MSDCSC\msdcsc.exe upx C:\Users\Admin\Documents\MSDCSC\msdcsc.exe upx C:\Users\Admin\Documents\MSDCSC\msdcsc.exe upx behavioral1/memory/908-69-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral1/memory/1496-70-0x0000000000400000-0x00000000004C7000-memory.dmp upx behavioral1/memory/908-71-0x0000000000400000-0x00000000004C7000-memory.dmp upx -
Loads dropped DLL 2 IoCs
Processes:
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exepid process 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe -
Processes:
msdcsc.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" msdcsc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" msdcsc.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
msdcsc.exepid process 908 msdcsc.exe -
Suspicious use of AdjustPrivilegeToken 46 IoCs
Processes:
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exemsdcsc.exedescription pid process Token: SeIncreaseQuotaPrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeSecurityPrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeTakeOwnershipPrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeLoadDriverPrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeSystemProfilePrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeSystemtimePrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeProfSingleProcessPrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeIncBasePriorityPrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeCreatePagefilePrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeBackupPrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeRestorePrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeShutdownPrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeDebugPrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeSystemEnvironmentPrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeChangeNotifyPrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeRemoteShutdownPrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeUndockPrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeManageVolumePrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeImpersonatePrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeCreateGlobalPrivilege 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: 33 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: 34 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: 35 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe Token: SeIncreaseQuotaPrivilege 908 msdcsc.exe Token: SeSecurityPrivilege 908 msdcsc.exe Token: SeTakeOwnershipPrivilege 908 msdcsc.exe Token: SeLoadDriverPrivilege 908 msdcsc.exe Token: SeSystemProfilePrivilege 908 msdcsc.exe Token: SeSystemtimePrivilege 908 msdcsc.exe Token: SeProfSingleProcessPrivilege 908 msdcsc.exe Token: SeIncBasePriorityPrivilege 908 msdcsc.exe Token: SeCreatePagefilePrivilege 908 msdcsc.exe Token: SeBackupPrivilege 908 msdcsc.exe Token: SeRestorePrivilege 908 msdcsc.exe Token: SeShutdownPrivilege 908 msdcsc.exe Token: SeDebugPrivilege 908 msdcsc.exe Token: SeSystemEnvironmentPrivilege 908 msdcsc.exe Token: SeChangeNotifyPrivilege 908 msdcsc.exe Token: SeRemoteShutdownPrivilege 908 msdcsc.exe Token: SeUndockPrivilege 908 msdcsc.exe Token: SeManageVolumePrivilege 908 msdcsc.exe Token: SeImpersonatePrivilege 908 msdcsc.exe Token: SeCreateGlobalPrivilege 908 msdcsc.exe Token: 33 908 msdcsc.exe Token: 34 908 msdcsc.exe Token: 35 908 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
msdcsc.exepid process 908 msdcsc.exe -
Suspicious use of WriteProcessMemory 43 IoCs
Processes:
1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.execmd.execmd.exemsdcsc.exedescription pid process target process PID 1496 wrote to memory of 1612 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe cmd.exe PID 1496 wrote to memory of 1612 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe cmd.exe PID 1496 wrote to memory of 1612 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe cmd.exe PID 1496 wrote to memory of 1612 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe cmd.exe PID 1496 wrote to memory of 1012 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe cmd.exe PID 1496 wrote to memory of 1012 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe cmd.exe PID 1496 wrote to memory of 1012 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe cmd.exe PID 1496 wrote to memory of 1012 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe cmd.exe PID 1612 wrote to memory of 1544 1612 cmd.exe attrib.exe PID 1612 wrote to memory of 1544 1612 cmd.exe attrib.exe PID 1612 wrote to memory of 1544 1612 cmd.exe attrib.exe PID 1612 wrote to memory of 1544 1612 cmd.exe attrib.exe PID 1012 wrote to memory of 1500 1012 cmd.exe attrib.exe PID 1012 wrote to memory of 1500 1012 cmd.exe attrib.exe PID 1012 wrote to memory of 1500 1012 cmd.exe attrib.exe PID 1012 wrote to memory of 1500 1012 cmd.exe attrib.exe PID 1496 wrote to memory of 908 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe msdcsc.exe PID 1496 wrote to memory of 908 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe msdcsc.exe PID 1496 wrote to memory of 908 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe msdcsc.exe PID 1496 wrote to memory of 908 1496 1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe msdcsc.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe PID 908 wrote to memory of 1288 908 msdcsc.exe notepad.exe -
System policy modification 1 TTPs 3 IoCs
Processes:
msdcsc.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion msdcsc.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern msdcsc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1" msdcsc.exe -
Views/modifies file attributes 1 TTPs 2 IoCs
Processes:
attrib.exeattrib.exepid process 1544 attrib.exe 1500 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe"C:\Users\Admin\AppData\Local\Temp\1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe"1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe" +s +h2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\1185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318.exe" +s +h3⤵
- Sets file to hidden
- Views/modifies file attributes
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp" +s +h3⤵
- Sets file to hidden
- Views/modifies file attributes
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"2⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Executes dropped EXE
- Windows security modification
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\SysWOW64\notepad.exenotepad3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
283KB
MD59c40dc626ff68bd1b114b266ad83aaaa
SHA14852aa302d72519f443bff5fa14ae44bec7183a2
SHA2561185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318
SHA512c09773f312edf242b4071a9eb42e634db36587ebf53e5430ab95ff1421a327fe7b7f909be03279d65db58a335c3958960a96e29c342f926b90e0d70cf54f93cd
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
283KB
MD59c40dc626ff68bd1b114b266ad83aaaa
SHA14852aa302d72519f443bff5fa14ae44bec7183a2
SHA2561185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318
SHA512c09773f312edf242b4071a9eb42e634db36587ebf53e5430ab95ff1421a327fe7b7f909be03279d65db58a335c3958960a96e29c342f926b90e0d70cf54f93cd
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\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
283KB
MD59c40dc626ff68bd1b114b266ad83aaaa
SHA14852aa302d72519f443bff5fa14ae44bec7183a2
SHA2561185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318
SHA512c09773f312edf242b4071a9eb42e634db36587ebf53e5430ab95ff1421a327fe7b7f909be03279d65db58a335c3958960a96e29c342f926b90e0d70cf54f93cd
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\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
283KB
MD59c40dc626ff68bd1b114b266ad83aaaa
SHA14852aa302d72519f443bff5fa14ae44bec7183a2
SHA2561185a0ec37d0edaba196a73f3b2f9df0126caca14011876c34f375ef3a974318
SHA512c09773f312edf242b4071a9eb42e634db36587ebf53e5430ab95ff1421a327fe7b7f909be03279d65db58a335c3958960a96e29c342f926b90e0d70cf54f93cd
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memory/908-71-0x0000000000400000-0x00000000004C7000-memory.dmpFilesize
796KB
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memory/908-69-0x0000000000400000-0x00000000004C7000-memory.dmpFilesize
796KB
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memory/908-62-0x0000000000000000-mapping.dmp
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memory/1012-57-0x0000000000000000-mapping.dmp
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memory/1288-66-0x0000000000000000-mapping.dmp
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memory/1496-68-0x0000000004F70000-0x0000000005037000-memory.dmpFilesize
796KB
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memory/1496-54-0x0000000075731000-0x0000000075733000-memory.dmpFilesize
8KB
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memory/1496-70-0x0000000000400000-0x00000000004C7000-memory.dmpFilesize
796KB
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memory/1496-55-0x0000000000400000-0x00000000004C7000-memory.dmpFilesize
796KB
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memory/1500-59-0x0000000000000000-mapping.dmp
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memory/1544-58-0x0000000000000000-mapping.dmp
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memory/1612-56-0x0000000000000000-mapping.dmp